Grain polisher and cleaner.



I. STEINER. GRAIN POLISHER AND CLEANER.

AfPI-ICATION FILED JULY 20, 1909.

Patented Mar. 8, 1910.

2 BHEETS-SHEET 2.

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TE STATES rnrnn ISIDOR STEINER, 0F MUNICH, GERMANY, ASSIGNOR 'IOGESELLSCHAFT FIIR STEINERS MALZ ENTKEIMUNGS PUTZ UND POLIERMASCI-IINENMIT BESCI-IRANKTER I-IAF- TUNG, 0F MUNICH, GERMANY.

GRAIN POLISHER AND CLEANER.

Specification of Letters Patent.

Patented Mar. 8, 1910..

To all whom it may concern:

Be it known that I, ISIDOR STEINER, a subject of the Emperor of Germany,residing at Munich, in the Empire of Germany, have invented certain newand useful ImproV-ements in Grain Polishers and Cleaners, of which thefollowing is a full, clear, concise, and exact description, referencebeing had to the accompanying drawings, forming a part of thisspecification.

The invention relates to a machine for removing the combs from, orotherwise treating and cleaning grain, principally malt, and isdistinguished from known similar apparatus principally by the fact thatthe grain, especially malt, is completely freed from the combs, thecombs and dust are separated and removed at the same time from the grainto be treated and the latter receives a considerable gloss, which givesit a better appearance, without the grain being damaged in any way.

The machine consists essentially of an apparatus in which. the grain tobe treated is made to whirl according to a known method by means of armsattached to a rotating shaft so that the combs are separated from thegrains, and mutual friction and polishing takes place.

The machine described further possesses the advantage of greatsimplicity of construction combined with a large capacity, and a smalldemand for power. Experiments have proved that 6,250 kilograms of maltcan be treated per hour at an expenditure of 3 H. P.

In the drawings: Figure 1 is an elevation of a complete plant, includingthe subjectmatter of this application, an aspirator and a dustcollector. Fig. 2 is a longitudinal section of the apparatus forremoving the combs, and Fig. 3 is a transverse section through the same.

Referring to the drawings, 2 is the apparatus in which the removal ofthe combs from the grain to be treated is performed, 3 is the aspirator,and f the dust collector. These latter are not a part of this invention,and are only given for the purpose of showing the relation of the combsseparator to other parts of a complete apparatus.

Apparatus for removing the combs, and similar apparatus provided withstriking arms arranged spirally on a rotating shaft are already known,in which the said arms are attached to the shaft by means of bolts andcan be set at different angles to the shaft as required. In thisarrangement, however, the single arms are not displaced in a planenormal to the shaft, 2'. 0., the angles which the arms make with eachother are not altered, so that the obliquity of the spiral surfaceformed by the arms is unchanged. This is therefore merely a case ofdisplacing single elements of the spiral surfaces formed by the strikingarms, without changing the obliquity of the surfaces in any way. Theresult of this is that by displacing the single arms, only the speed canbe altered with which the malt or the like particles leave the arm inquestion, and not the speed with which the grain to be treated passesthrough the whole drum, as the latter speed only depends on theobliquity of the spiral surface and not on the angle (which might bevaried), which the single parts of the spiral surfaces make with eachother.

The essence of the improvement in the apparatus for removing the combsand polishing the grain, which improvement forms the subject-matter ofthe present invention, consists in arranging rotatively in their ownplanes, the arms or rings of arms mounted on the shaft, in such a waythat, by displacing the same relatively to one another, the obliquity ofthe spiral surface formed by the striking plates can be altered, andthus the speed of the malt or the like through the apparatus can beregue-e lated.

The apparatus for removing the combs and for polishing the grain, shownin Figs. 2 and 3, consists of a horizontal cylinder 13, in which anumber of arms 14: provided with striking plates 15, are set at an anglewith each other on a shaft, each of them being capable of displacementin its own radial plane, so that according to the angle made by the armswith each other, a variable obliquity of the spiral surfaces can beobtained, and therefore a more or less rapid and intense treatment ofthe grain.

In order that the setting of the arms may be carried out while themachine is working, the arms 14, provided with striking 105 plates 15,are arranged rotatively and rad1- ally on the hollow shaft 16, Withinwhich is disposed a shaft 17 provided with grooves 43 of differentobliquities, and capable of axial movement. Pins or the like 18 areprovided on the bosses of the arms 14, engaging in oblique grooves inthe shaft 17, so that on axial displacement of the inner shaft 17 Withinthe hollow shaft 16, the single arms or rings of arms are turned throughdifferent angles. As the obliquity of the spiral surfaces'formed by theseveral striking plates is hereby increased or diminished, the speed oftraversing, and therefore the degree of removal of the combs, and ofpolishing the grain, can be varied at will, as required, while themachine is running. The axial displacement of the inner shaft 17 withinthe hollow shaft 16 is effected, by way of example, as illustrated, bymeans of a hand wheel 19 capable of axial displacement through themedium of a screw-thread on the outer surface of a sleevelike member 19carried by the frame and inclosing the end of the hollow shaft 16, aring 20 on the handwheel engaging in a groove in the pro jecting end ofthe inner shaft. The lower semicircular part 21 of the cylinder is perforated, so that the coarser particles of the combs fall immediatelyinto the receiver 22 (Figs. 2 and 3), formed by the frame. They can'bedirectly removed from these receivers, or conveyed to an outlet pipe, as11' (Fig. 1). The perforation of the under side 21 is notabsolutelynecessary. If the perforations are absent, allthe particles ofthe combs reach the aspirator 3, and are thence conveyed to the dustcollector at,

where they are separated from the-air cur-- rent. I

The shaft provided with striking arms 14 is shown asdriven by a beltpulley 2(3, and the refuse, or coarser portions falling through theperforations 21 can be removed through an outlet pipe 10. '5 is theorifice for feeding in the grain, and 6 a pipe by $;which it can beconnected with an aspirator. Having thus fully illustrated and deMcribed my invention, what I claim, is:

1. In a machine for scouring grain, an

low shaft, arms carrying striking plates mounted thereon, a shaftarranged within the hollow shaft and provided with QI'UOYQA of differentobliquitles, pins attached to the arms and engaging the grooves on theinner shaft, in combination with means for axially adjusting the innershaft while the machine is running.

In a grain cleaner and polisher, a rotatably mounted hollow shaftcarrying arms provided. with striking blades, :1 second shaft locatedwithin this hollow shaft and provided with grooves at different anglesto each other, pins attached to the arms and engaging the grooves on theinner shaft, in combination with a hand-wheel connected to the end ofthe inner shaft and displaceable axially relative to the outer shaft.

at. In a grain cleaner and polisher, a rotatably mounted hollow shaftcarrying arms provided with striking plates, an axially movable shaftinclosed within the hollow shaft having cut upon its surface grooves atdifierent obliquities to the radius and to each other, projectionsattached to the arms and engaging the grooves, a threaded memberinclosing the end of the hollow shaft, a ring engaging the end of theinner shaft, in combination with a hand-wheel on said threaded memberaxially movable with respect to the hollow shaft and by means of thering displacing axially the inner shaft.

Dated this (5th day of July 190E).

ISIDOR t". EINER. \Vitnesses LOUIS MUELLER, MA'rI-IILDE K. HELD.

